debug/gdb: update the version strings

Almost all versions have been renamed, but the gdb folks did not
setup legacy symlinks.

For more information, see this message:
http://sourceware.org/ml/gdb/2011-09/msg00002.html

Reported-by: ManuelStahl <manuel.stahl@iis.fraunhofer.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 32209f462bbb35f3e3c7b260dc643e1183bdd710)

 # Blackfin specific configuration file

 ## select ARCH_SUPPORTS_32

 ## select ARCH_DEFAULT_32

 ## select ARCH_DEFAULT_LE

 ## select ARCH_SUPPORT_ARCH

 ## select ARCH_SUPPORT_CPU

 ## select ARCH_SUPPORT_TUNE

 ## select ARCH_SUPPORT_FPU

 ##

 ## help The Blackfin architecture